Archive for the ‘Mathematics’ Category

Unicode characters use hexadecimal numbers (base 16) to display characters from languages like Japanese, Chinese, and Greek.

A life table gives us an idea of how much longer we can expect to be around. There are interesting probabilities and semi-log graphs involved.

Oct 15 is Blog Action Day and the topic is "poverty". Here's some thoughts on how to reduce it.

A mathematical take on that rhetorical question favored by those in authority.

Here's another case where a bank offers what seems to be a very good deal - 0% interest on a loan. But let's have a closer look.

A reader asked what tools I used to produce the Interactive Mathematics site.

Inflation is a concern all over the world right now, but some countries are experiencing uncontrolled hyperinflation. What does hyperinflation mean and what does it look like?

Google's handy calculator doesn't always get it right, even with simple subtraction.

I received a delightful mail today from a lady who lives on an isolated island off Europe. She finds Interactive Mathematics a really valuable resource for teaching her daughter mathematics and for escaping the poverty trap.

There is sophisticated math going on behind the scenes when you perform a search on Google. It involves a technique called latent semantic analysis which is based on matrix operations.